| 摘要 |
PROBLEM TO BE SOLVED: To enable to eliminate the operation of cutting off the surplus length of cables, by combining wirings of weak current cables in a dwelling unit into a unit so that facilities therefor be completed in each dwelling unit. SOLUTION: A weak current unit 20 fitted with a coaxial unit 30, a fire alarm unit 40 and a unit 50 comprising cables alone is provided under a floor slab above a ceiling inspection opening of a unit bus, and a cable connection box 41 in which a forward line is formed by connecting a pair of output lines of one set with a pair of input lines of the next set and also a return line is formed by connecting the remaining pair of the first set with that of the last set, is provided. In the unit 50, a part 51 on which the respective parts in a prescribed length of separate cables for the fire alarm unit unit, an intercom and a gas sensor are wound is provided, and cutting-off of the surplus length of each cable led out from each of the units 30, 40 and 50 and removal of a coating of the end part are made beforehand in a factory so that they are matched with the length of each cable to an element being the other side of connection. |
